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c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=noZWG3P3O0MHQDtdNioTi7jsSJK8AoXcSNJCtLLqjkQ=; b=XpZqMYOJzyf1Htl5Q16YTruEqXZLGPfcxMEeMryLuonlRmj7e3GbW2wJp60Ewk2WyZbb R1v1aq3N/e21u2HOwpEYiOyL+oifweQkJ5mKhDRIgJToEVKC2Z/QF+LWzFfDcBIZcmkF 6B1jtyK8wJFPEGQD4W1QgR5+q/j9q3RNxoyz0Rr7ek/VP0mZZ7qpbl9LlOEaHu+oXXNC xSvu1hDGlN7RMzvCdbeJ5kF/xOgal9tsfGL5piKmMcXLzBRS8+u1QGsdlan+jfezd1tb AMZoU/UjwdXmhwg8N6S+e5FMTvcyYWeiRswgZbCdmYxdbUyl6LtsTJdS8S6aSAJ3i5i2 Ug== From: Sam Eiderman To: kwolf@redhat.com, qemu-block@nongnu.org, qemu-devel@nongnu.org, mreitz@redhat.com, seabios@seabios.org, kraxel@redhat.com, kevin@koconnor.net Date: Wed, 26 Jun 2019 15:39:47 +0300 Message-Id: <20190626123948.10199-8-shmuel.eiderman@oracle.com> X-Mailer: git-send-email 2.13.3 In-Reply-To: <20190626123948.10199-1-shmuel.eiderman@oracle.com> References: <20190626123948.10199-1-shmuel.eiderman@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9299 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906260150 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9299 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906260151 X-Spam-Level: *** Message-ID-Hash: L7PTYKKARQEJPJ4BQB5AJWRN6MABGDNP X-Message-ID-Hash: L7PTYKKARQEJPJ4BQB5AJWRN6MABGDNP X-MailFrom: shmuel.eiderman@oracle.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-seabios.seabios.org-0; header-match-seabios.seabios.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: karl.heubaum@oracle.com, arbel.moshe@oracle.com X-Mailman-Version: 3.2.2 Precedence: list Subject: [SeaBIOS] [QEMU] [PATCH v5 7/8] bootdevice: FW_CFG interface for LCHS values List-Id: SeaBIOS mailing list Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Authentication-Results: coreboot.org X-Spamd-Bar: / X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Using fw_cfg, supply logical CHS values directly from QEMU to the BIOS. Non-standard logical geometries break under QEMU. A virtual disk which contains an operating system which depends on logical geometries (consistent values being reported from BIOS INT13 AH=3D08) will most likely break under QEMU/SeaBIOS if it has non-standard logical geometries - for example 56 SPT (sectors per track). No matter what QEMU will report - SeaBIOS, for large enough disks - will use LBA translation, which will report 63 SPT instead. In addition we cannot force SeaBIOS to rely on physical geometries at all. A virtio-blk-pci virtual disk with 255 phyiscal heads cannot report more than 16 physical heads when moved to an IDE controller, since the ATA spec allows a maximum of 16 heads - this is an artifact of virtualization. By supplying the logical geometries directly we are able to support such "exotic" disks. We serialize this information in a similar way to the "bootorder" interface. The new fw_cfg entry is "bios-geometry". Reviewed-by: Karl Heubaum Reviewed-by: Arbel Moshe Signed-off-by: Sam Eiderman --- bootdevice.c | 32 ++++++++++++++++++++++++++++++++ hw/nvram/fw_cfg.c | 14 +++++++++++--- include/sysemu/sysemu.h | 1 + 3 files changed, 44 insertions(+), 3 deletions(-) diff --git a/bootdevice.c b/bootdevice.c index 2b12fb85a4..b034ad7bdc 100644 --- a/bootdevice.c +++ b/bootdevice.c @@ -405,3 +405,35 @@ void del_boot_device_lchs(DeviceState *dev, const char= *suffix) } } } + +/* Serialized as: (device name\0 + lchs struct) x devices */ +char *get_boot_devices_lchs_list(size_t *size) +{ + FWLCHSEntry *i; + size_t total =3D 0; + char *list =3D NULL; + + QTAILQ_FOREACH(i, &fw_lchs, link) { + char *bootpath; + char *chs_string; + size_t len; + + bootpath =3D get_boot_device_path(i->dev, false, i->suffix); + chs_string =3D g_strdup_printf("%s %" PRIu32 " %" PRIu32 " %" PRIu= 32, + bootpath, i->lcyls, i->lheads, i->lse= cs); + + if (total) { + list[total - 1] =3D '\n'; + } + len =3D strlen(chs_string) + 1; + list =3D g_realloc(list, total + len); + memcpy(&list[total], chs_string, len); + total +=3D len; + g_free(chs_string); + g_free(bootpath); + } + + *size =3D total; + + return list; +} diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 9f7b7789bc..c1230fe11c 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -916,13 +916,21 @@ void *fw_cfg_modify_file(FWCfgState *s, const char *f= ilename, =20 static void fw_cfg_machine_reset(void *opaque) { + MachineClass *mc =3D MACHINE_GET_CLASS(qdev_get_machine()); + FWCfgState *s =3D opaque; void *ptr; size_t len; - FWCfgState *s =3D opaque; - char *bootindex =3D get_boot_devices_list(&len); + char *buf; =20 - ptr =3D fw_cfg_modify_file(s, "bootorder", (uint8_t *)bootindex, len); + buf =3D get_boot_devices_list(&len); + ptr =3D fw_cfg_modify_file(s, "bootorder", (uint8_t *)buf, len); g_free(ptr); + + if (!mc->legacy_fw_cfg_order) { + buf =3D get_boot_devices_lchs_list(&len); + ptr =3D fw_cfg_modify_file(s, "bios-geometry", (uint8_t *)buf, len= ); + g_free(ptr); + } } =20 static void fw_cfg_machine_ready(struct Notifier *n, void *data) diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 173dfbb539..1ca8799588 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -174,6 +174,7 @@ void validate_bootdevices(const char *devices, Error **= errp); void add_boot_device_lchs(DeviceState *dev, const char *suffix, uint32_t lcyls, uint32_t lheads, uint32_t lsecs); void del_boot_device_lchs(DeviceState *dev, const char *suffix); +char *get_boot_devices_lchs_list(size_t *size); =20 /* handler to set the boot_device order for a specific type of MachineClas= s */ typedef void QEMUBootSetHandler(void *opaque, const char *boot_order, --=20 2.13.3 _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-leave@seabios.org